Sudoku Plus Volume Five

Following in the challenging footsteps of its predecessors, Sudoku Plus Volume Five offers 101 Sudoku puzzles—and additional new brain teasers for those seasoned veterans who want to take their skills to the next level and beyond! Vertical dreams up puzzle books that are much more daunting and ultimately satisfying because they're conceived and constructed by a human brain—that of the genius puzzle-crafter Tetsuya Nishio. 

"Tetsuya Nishio has one of the world's most creative puzzle-making minds. I'm a big fan."—Will Shortz, Crossword Editor, New York Times; Puzzlemaster, NPR